Keywords
- Odes1
- Odes, Latin (Medieval and modern)1
- Oedipus (Greek mythological figure)1
- Offertories (Music)1
- Official Papers: National and Local Affairs1
- Officium pro defunctis (Catholic Church)3
- Old age3
- Oratory3
- Orders of knighthood and chivalry1
- Ordinatio (Duns Scotus, John)1
- Ordre de Saint-Michel1
- Oria, Johannes d'1
- Origen1
- Orlandini, Stefano1
- Orthodox Eastern Church4
- Orto, Giovanni dall'1
- Paffiere, Arcangelo1
- Paffiere, Matteo1
- Pagani, Angiola1
- Pagliaiolo, Cenni1